Long-handled broadsword, an ancient weapon in China, appeared very late. As a weapon, it is important to use it. It was developed according to the needs of war. The earliest weapons were sticks and stones, which could be used to smelt copper. Weapons all over the world are similar, except spears with broadswords and machetes.

China has experienced a long period of chariot warfare and infantry warfare. During this period, because personal military courage was limited in bumpy chariots or tight military formations, the shape of long weapons was also limited, but a spear with a straight stab, a dagger with a horizontal hook, and a halberd combining the two. Later, cavalry gradually became the protagonist of the battlefield. With the maturity of cavalry tactics, cavalry weapons are also being refurbished. The emergence of heavily armored cavalry in Sui and Tang Dynasties required the birth of more lethal weapons. Soon, the broadsword with long handle and straight blade became popular. Long-handled broadsword, similar to the legendary three-pointed double-edged knife of Erlang God, has great killing power. In the history of Tang Jun, when heavy cavalry attacked, the broadsword with long handle turned to dust. In the Song Dynasty, more than a dozen moon-covering knives were developed, which became the Dragon Crescent Moon Knife.

However, during the Three Kingdoms period, Guan Yu and his cavalry still used traditional spears and halberds. Guan Yu's history of stabbing Yan Liang with a short blade under his horse also proves that Guan Yu's real weapon is spear and halberd, an assassination weapon!